What’s a Bookfold? Our 3-Layer Bamboo Cotton Bookfold insert is constructed using a bookfold design, which means the layers are folded rather than sewn together. This creates a trim, flexible insert that can be easily customized to fit your baby’s needs. The bookfold also allows for quicker drying times compared to traditional layered inserts. Bonus! When used in a cover style diaper, the AWJ printed side offers an easy clean up, stay dry surface. Have you tried them yet? #clothdiaperaddict